Combined chimney cowl and ventilator



July 27 Y TEFL TEMPLETON ET AL .COMBINED CHIMNEY COWL AND VBNTILATOR INVENTORS w; a l m w W R w 2 e m I a a .w W Y B m b n d M" m ITNESSES I T I I ATTORN EY July 27-, 1926. 1,593,608

' Y TELL TEMPLETON ET AL COMBINED CHIMNEY COWL AND VBNTILATOR Filed Feb. 10, 1925 2 Sheets-Sheet 2 Y 1 81i T enylelofi mvsm'ons 1 Charles (I Boelle wrmzssss I A'ITORNEY Patented July 27, 1926.

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Y TELL TEMPLETON AND CHARLES 3. BOELLE, 01 POtm'IELLQ IDAHO.

COMBINED CHIMNEY COW-L AND vn nrrneron.

Application filed February This invention relates to a combined chim-- ney cowl and ventilator. V

The. object iswto provide a simple and cheaply manufactured device which may be easily installed upon a chimney or stack for the purpose of superinducing an updraft therein to cause the fire to burn free- 1y, as in the winter time; or by a manipu= lat-ion of certain parts of the device, to reverse the action of the air so that the latter may freely pass down the chimney or stack to cause the circulation of fresh air through the rooms of the building, for ventilating purposes in thesummer time.

Another object is to provide a device of this character which may be easily and quickly adjusted into position to accomplish eitherof the above purposes and to mount the parts, in compact form, upon revolving means so as to permit the device to turn by the action of the wind in order to receive the full force thereof, and direct thesame either to cause a down-- draft or an updraft in the stack or chim- 3d final object is to provide means in such a device which will serve to exclude. dust and dirt therefrom when the device is used as a ventilator, and to provide means for excluding rain water at all times.

A full and complete understanding of the invention may be obtained from a consideration of the following detailed description, taken inconnection with the accompanying drawings forming a part of this specification, it being understoodthat while the drawings show a practical form of the invention, the latter is not to be confined to strict conformity with the showing thereof, but may be changedor modified so long as such changes or modifications mark no material departure from the salient features of the invention, as specifically pointed out in the appended claims. In the drawings, in which similar reference characters designate corresponding parts-throughout the several figures Figure 1 is a perspective view showing the improved device in position upon the chimney of a small building;

Figure 2 is an enlarged vertical, longitudinal section through the device detached from the chimney;

Figure 3' is a top plan view, partly in pending on the size and nature of the chimney or stack, and is preferably formed of some suitable, strong sheet metal to resist the force of the wind and to withstand the act ons of the elements.

Each end ofthe wind trunk is normally open, and adjacent to one end there is suitably connected a perpendicularly disposed branch or fine 2, communicatingtherewith and adaptedtostand upright beneath the wind trunk and to support the same in the mannerto be described.- v

The fine 2 is preferably of the same di ameter and cross-sectional shape as the-wind trunk, though somewhat shorter than the same, and adjacent to the open, bottom end I of the flue, there is secured an annular ring 3, exteriorly fitting the same and held there= to by rivets or otherwise. The ring is pro vided on its under face with an annular ball race and constitutes an element of an antifriction device. s

The lower end of the flue 2 isplaced over the upper end of an extension pipe 4:, which is; adapted to be secured, in any desired manner, to the upper open end of a chimney 5, as shown inFigure 1 of the drawing, but where the device is to be used at the top of a tubular sheet metal stack, the showingmay be taken as indicative of the latter.

The pipe i is provided with a: complementary ring 6, suitably held in position thereon and provided with a coacting ball race, the balls 7 being interposed between the two rings in the usual manner, to permit the trunk 1 and the fine 2 to rotate freely about the vertical axis of the lat=- ter, the upper ring having a depending, peripheral flange overhanging the lower ring to exclude rain water, etc.

The lower ring may be provided with hooks 8 or the equivalent, to which are secured the upper ends of guy wires 9 to steady and brace the upper end of the pipe or stack.

That end of the wind trunk closest to the flue 2 constitutes the entrance end of said trunk, and is provided with a funnelshaped extension 10 to catch the wind, in a well known manner, and the mouth of the funnel is covered with a wire screen 11 to prevent the entrance of dust, dirt and insects within the trunk.

The upper portion of the mouth of the funnel is also provided with a substantially semi-circular inclined rain shed 12, suitably held thereto and formed of suitable sheet metal, while within the entrance end of the trunk and secured to the lower portion thei eof, is a bafile plate 13, cut around its sides and lower portion to fit the curvature of the trunk, and provided with a marginal flange for attaching the same in position, the upper edge of the plate being formed straight across or horizontal. The upper, straight edge of the baflle plate is located below the longitudinal axis of the trunk, as shown in Figure 2, and said plate also serves to cause any rain water entering the trunk to flow back again, to be directed down and out by the inclined wall of the funnel.

The opposite, rear or outlet end of the trunk is equipped with a door or cover 14, having a marginal flange 15, and hinged at the top to the end of said trunk, as indicated at 16, said door being adapted to be swung downwardly to close the end of the trunk, with the peripheral flange surrounding the end of the trunk so as to prevent th passage of air therethrough when desired.

Mounted on top of the wind trunk is a longitudinally disposed, upstanding vane 17, formed preferably of two sheets of suitable sheet metal, the margins of one sheetbeing flanged over the edges of the other, as indicated at 18 in the drawings and the two sheets being further secured by rivets 19.

The trap door or cover 14 is adapted to be opened, and held open by a suitable chain 20, having one end secured to said door and passing up and over a pair of pulleys or sheaves 21 mounted on one side of the vane, the other end portion of said chain passing down adjacent to the chimney or stack, and adapted to have one of the links of the same secured to a book 22, or similar device secured, to the upper ring 3, so as to revolve with the device when the same is acted upon through the medium of the aforesaid vane.

A coiled spring 23 serves to pull the door or cover shut. when the said chain is released from the hook 22, the ends of said spring being connected by wires 24 to the said door and to the aforesaid book 22 respectively.

In the use of the device as a draft control during the winter months, when it is desired to cause all the draft possible upwardly through the stack or chinniey, the trap door or cover 14 is elevated into the position shown in Figure 2 of the drawing, and the proper link of the chain is engaged on the hook 22, when the wind trunk is entirely open and the spring is under tension. Air entering through the funnel end of the trunk is caused to pass over the ballle plate 13, and then straight through the trunk and out the open end, as indicated by the full line arrow, the passage of the air over the upper end of the line 2 causing an up-draft in the latter and consequently in the chimney, as also indicated by the full line arrow.

When the door is closed, however, and held shot by the spring, the entire volume of air or wind entering the funnel end of the trunk is caused to pass downwardly through the fiue and chimney to be distributed to the rooms or building as desired; and an intermediate position of the door, when held at the desired degree of elevation by the engagement of the proper link of the chain with the hook, will resuit in a varied degree of ventilation, as is desirable in summer time, when the chimney is not in use as a smoke conductor.

From the foregoing it will be seen that a simple, cheaply manufactured. and easily installed device has been provided, to be mounted upon the top of a stack or chimney Wl11 1"l1 may be readily adjusted to secure the desired amount of ventilation of a building, as in summer time, and which may also be adjusted to carry off the smoke and prodnets of combustion from the fire or fires in winter time; the entire device being strong and durable and of compact form and mounted to adjust itself to the varying course of the wind.

What is claimed is 1. A combined chimney cowl and ventilator, comprising a horizontal wind trunk adapted to be rotatably mounted on a chimney, a wind vane secured to the top of the trunk and overhanging the outlet end, a flanged closure hinged to the top of the trunk adjacent to the outletend thereof adapted when closed to convert the device into a ventilator, a flexible pull element for raising said closure to open position, and a pulley mounted on said vane over which said puli element is trained, said pull element adapted to be fastened to hold the closure open, and said closure being adapted to close when said pull element is released.

2. A combined chimney cowl and ventilator comprising, in combination. a horizontal wind trunk having an integral flue portion communicating therewith, and a wind vane above the outlet end, an anti-friction hearing between the chimney and the trunk, a

door having a peripheral flange mounted on whereby said door may be opened by an a horizontal hinge at the outlet end of the operator at a distance. trunk and arranged to swing outwardly and In testimony, that we claim the foregoing 1 upwardly to open that end of the trunk, as our own, we have hereto affixed our sig- 5 means tending to close the door and hold natures.

it in closed position against the wind pres- Y TELL TEMPLETON. sure, and means associated with the vane CHARLES J. ROELLE. 

